Q.

Electron configuration of a transition element is [Ar]4s23d6. A sudden increase is observed between

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a

IP3 & IP4

b

IP1 & IP2

c

IP4 & IP5

d

IP2 & IP3

answer is C.

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Detailed Solution

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After the loss of 3electrons, the configuration is 4s03d5

Now, the removal of electron from stable half filled configuration is difficult and a sudden increase is observed between IP3 & IP4

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